OPENSUSE-SU-2025:20163-1: grub2 security update

OPENSUSE-SU-2025:20163-1, released December 15, 2025, fixes 7 CVEs in grub2 (version 2.12-160000.3.1). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.8

Base score, 0 to 10

Highest EPSS

0.0041

35th percentile

Priority of the 7 CVEs

Patch now 0
                                Urgent 0
                                High 1
                                Routine 6

Fixed package versions

Product	Release	Fixed in
grub2	opensuse-leap 16.0	2.12-160000.3.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2025-61662	Grub2: missing unregister call for gettext command may lead to use-after-free	7.8	0.0022	None reported
Routine	CVE-2024-56738	GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.	6.7	0.0041	None reported
Routine	CVE-2025-61661	Grub2: grub2: out-of-bounds write via malicious usb device	4.8	0.0021	None reported
Routine	CVE-2025-54770	Grub2: use-after-free in net_set_vlan	4.9	0.0016	None reported
Routine	CVE-2025-54771	Grub2: use-after-free in grub_file_close()	4.9	0.0015	None reported
Routine	CVE-2025-61664	Grub2: missing unregister call for normal_exit command may lead to use-after-free	4.9	0.0015	None reported
Routine	CVE-2025-61663	Grub2: missing unregister call for normal commands may lead to use-after-free	4.9	0.0014	None reported

Also fixes CVE-2025-61662

SUSE-SU-2025:21212-1
grub2 on sles 16.0
ALAS2023-2025-1342
grub2-common, grub2-debuginfo, grub2-debugsource and 21 more on amzn 2023
SUSE-SU-2025:4305-1
grub2 on sles 15.7
SUSE-SU-2025:4196-1
grub2 on opensuse-leap 15.6, sles 15.6
RLSA-2026:4649
grub2 on rocky 10
RLSA-2026:4760
grub2 on rocky 9
RLSA-2026:4648
grub2 on rocky 8
RHSA-2026:4760
grub2-common, grub2-efi-aa64, grub2-efi-aa64-cdboot and 12 more on RHEL 9

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2025:20163-1

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